Restore Smooth Shifting to Your GM Truck
Is your 2015-2016 Silverado 1500 struggling with harsh shifts, delayed gear engagement, or a persistent “Service Transmission” light on the dash? You’re not alone. As a technician with over two decades of experience under the hood, I’ve seen countless GM trucks sidelined by a failing Transmission Control Module (TCM). The TCM is the brain of your transmission, and when it starts to falter, it can make your powerful truck feel unpredictable and unreliable. This isn’t just an annoyance; it’s a critical component for your vehicle’s performance and safety.
We offer a straightforward, reliable solution: a genuine GM Transmission Control Module (part number 24276411) that arrives at your doorstep fully programmed to your truck’s specific Vehicle Identification Number (VIN). We load it with the very latest software updates from General Motors, ensuring it communicates flawlessly with your vehicle’s systems right out of the box. This eliminates the need for an expensive trip to the dealership for programming, saving you time, money, and the hassle of a tow bill.
Case Study: A Tricky Diagnosis
A customer brought in a 2015 Sierra 1500 with the 8-speed transmission. The complaint was severe, jerky shifting between 1st and 2nd gear and occasional limp mode activation. Another shop had quoted him over $4,000 for a transmission rebuild, assuming internal clutch failure. I hooked up my professional scan tool and found a U0101 code (Lost Communication with TCM) and several intermittent solenoid performance codes. Instead of tearing down the transmission, I inspected the TCM. After seeing no external wiring damage, I knew the internal logic board was the likely culprit. We installed a VIN-programmed 2015-2016 Silverado TCM, performed the relearn procedure, and the truck shifted like it just rolled off the factory floor. It turned a potential multi-thousand-dollar repair into a simple, affordable fix.
Is Your Truck Showing These Transmission Troubles?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution you need.
- âś” Harsh, clunky, or erratic shifting
- âś” Delayed engagement when shifting from Park to Drive or Reverse
- âś” Vehicle stuck in one gear (limp mode)
- âś” “Service Transmission” or Check Engine Light illumination
- âś” Inaccurate gear indicator on the dashboard
- âś” Common Diagnostic Trouble Codes (DTCs) such as P0700, U0101, P0751, P0756
A Straightforward Guide to Installation
Because we handle the programming for you, installing your new 2015-2016 Silverado TCM is a direct swap. While specific steps may vary slightly by model, here is a general guide for a Silverado 1500.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- Locate the TCM: On most 2015-2016 Silverado 1500s, the TCM is mounted on the driver’s side of the radiator core support.
- Disconnect Electrical Connectors: Carefully release the locking tabs on the wiring harness connectors and pull them straight out from the module. Do not force them.
- Remove the Old Module: Unbolt the old TCM from its mounting bracket. Keep the hardware, as you will reuse it.
- Install the New Module: Mount your new, pre-programmed TCM onto the bracket using the original hardware.
- Reconnect Everything: Firmly plug the electrical connectors back into the new module until they click into place. Reconnect the negative battery terminal.
- Perform Relearn (Recommended): While the truck will run, for optimal performance it is highly recommended to perform a transmission adaptive pressure relearn procedure with a capable scan tool. This allows the new module to learn the specific characteristics of your transmission quickly.
Verified Vehicle Compatibility
This module, part number 24276411, is a direct replacement for a wide range of GM vehicles. Please verify your vehicle is on this list. Remember to provide your VIN upon purchase for correct programming.
- CAMARO 2016 (Underhood, LH frame rail)
- CTS 2016 (LH front rail, ID 24276411)
- ESCALADE / ESCALADE ESV 2015-2017 (LH radiator, 8-speed M5U)
- SIERRA 1500 / DENALI 1500 2015-2016 (LH core support, 8-speed M5U)
- SILVERADO 1500 PICKUP 2015-2016 (LH core support, 8-speed M5U)
- SIERRA / SILVERADO 2500 & 3500 2015-2016 (LH fan shroud, 6-speed MW7)
- YUKON / YUKON XL 1500 2015-2016 (LH radiator, 8-speed M5U)
Frequently Asked Questions
Why do you need my VIN?
Your vehicle’s VIN is essential for us to program the TCM with the correct software and calibrations for your specific engine, transmission, and options. This ensures perfect communication between modules and plug-and-play functionality.
Is any additional programming needed after I install it?
No! The module arrives fully programmed and ready for installation. You will not need to visit a dealer or mechanic for programming. We do recommend a transmission adaptive relearn procedure with a scan tool for the fastest, smoothest shift adaptation.
Where is the TCM located on my 2015 Silverado 1500?
On the 2015-2016 Silverado 1500 with the 8-speed transmission, the TCM is typically located on the driver’s side (LH) of the radiator core support, near the front of the engine bay.
Will this fix my transmission’s harsh shifting?
If the harsh shifting is caused by a faulty TCM, then yes, this part is the correct solution. A failing TCM is one of the most common causes of erratic shift quality in these vehicles.
Is this a new or used part?
This is a high-quality, tested component that has been inspected and programmed with the latest GM software. It is a reliable and cost-effective alternative to a new part from the dealer.